Stadium: Court 3 Round: 26 Ground: Clay
| ITF - M25 Santa Margherita | 2023/10/03 08:00 | Giorgio Tabacco v Kilian Feldbausch | 2-6,6-4,4-6 |
| Challenger - Braga | 2023/09/25 12:55 | Zsombor Piros v Kilian Feldbausch | 3-6,7-5,6-3 |
| ITF - M25 Sion | 2023/09/01 15:50 | Remy Bertola v Kilian Feldbausch | 6-4,7-5 |
| ITF - M25 Sion | 2023/08/31 12:00 | Noah Lopez v Kilian Feldbausch | 2-6,4-6 |
| ITF - M25 Sion | 2023/08/29 12:30 | Kilian Feldbausch v Gianmarco Ferrari | 6-3,6-2 |
| ITF - M15 Caslano | 2023/08/22 07:00 | Luigi Sorrentino v Kilian Feldbausch | 1-6,7-5,7-5 |
| ITF - M25 Muttenz | 2023/08/16 11:25 | Kilian Feldbausch v Jeffrey Von Der Schulenburg | 5-7,4-6 |
| Challenger - Meerbusch | 2023/08/10 11:35 | Kilian Feldbausch v Daniel Rincon | 2-6,1-6 |
| ITF - M25 Santa Margherita | 2023/10/03 08:00 | Luca Potenza v Kirill Kivattsev | 6-7,3-6 |
| ITF - M25 Santa Margherita | 2023/09/29 09:00 | Enrico Dalla Valle v Kirill Kivattsev | 6-7,6-2,7-5 |
| ITF - M25 Santa Margherita | 2023/09/28 09:00 | Kirill Kivattsev v Tommaso Compagnucci | 7-6,3-6,6-1 |
| ITF - M25 Santa Margherita | 2023/09/27 08:30 | Mariano Tammaro v Kirill Kivattsev | 4-6,2-6 |
| ITF - M25 Santa Margherita | 2023/09/25 12:00 | Sidane Pontjodikromo v Kirill Kivattsev | 6-4,0-6,3-6 |
| Challenger - Sibiu | 2023/09/18 08:30 | Henri Laaksonen v Kirill Kivattsev | 6-3,4-6,6-1 |
| Challenger - Sibiu | 2023/09/17 10:05 | Alexander Zgirovsky v Kirill Kivattsev | 3-6,5-7 |
| ITF - M15 Satu Mare | 2023/09/13 11:25 | Kirill Kivattsev v Stefan Palosi | 5-7,2-6 |